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Home > Catalyst and Auxiliary
According to the catalyst definition by the International Union of Pure Chemistry and Applied Chemistry (IUPAC) in 1981, a catalyst is a substance that alters the reaction rate without affecting the Gibbs free energy of the overall standard reaction. Catalysts span diverse types: liquid and solid catalysts based on state, and homogeneous versus heterogeneous catalysts based on phase state within the reaction system. In industrial processes, auxiliaries like centrifuge catalysts enhance production processes, improve product quality, or enable specific application performance. The array of auxiliaries definition is extensive, with varied performance - optimal effects stem from proper usage. ECHEMI's "Catalyst and Auxiliary" section predominantly supplies raw materials for Catalyst and Auxiliary.

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Sourcing catalyst intermediates can be complex, but ECHEMI makes it simple. Connect with 313 trusted manufacturers and 306 verified distributors offering a wide range of catalysts, including auxiliaries, centrifuge catalysts, and specialty intermediates for chemical production, pharmaceuticals, and industrial applications. Find high-quality catalysts and get competitive quotes from reliable suppliers.
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1190 Catalyst and Auxiliary items

Polybutadiene

CAS No: 9003-17-2

Formula: (C4H6)x

Categories: Catalyst and Auxiliary > Polymer

low molecular weight formulations are liquid, Polybutadiene is a homopolymer of butadiene. The catalysts involved in the polymerization process determine the structure and molecular weight of the rubber. It is used in tires and for other products that require abrasion resistance. At times both SBR and polybutadiene are extended with oils. There are underlying hazards associated with the individual oils, some of which are carcinogenic in animals and suspected human carcinogens.More

Gasoline

CAS No: 86290-81-5

Categories: Catalyst and Auxiliary > Petrochemical

Gasoline is a highly flammable, mobile liquidwith a characteristic odor. A complex mixture of volatilehydrocarbons (paraffins, cycloparaffins, and aromatics).Physical property values may vary depending on grade. TheOdor Threshold is 0.25 ppm.More

Vinyl acetate-vinylpyrrolidone copolymer

CAS No: 25086-89-9

Formula: (C6H9NO.C4H6O2)x

Categories: Catalyst and Auxiliary > Film Forming

white powder Copovidone is a white to yellowish-white amorphous powder. It istypically spray-dried with a relatively fine particle size. It has a slightodor and a faint taste.More

Benzene, ethenyl-, homopolymer, brominated

CAS No: 88497-56-7

Categories: Catalyst and Auxiliary > Polymer

Bromopolystyrene is flame retardant provides outstanding thermal stability and electrical performance. It is particularly suitable for engineering plastic applications such as polyesters (PET, PBT, PC T) and polyamides (nylons). Bromine fuctionalized polystyrene resin serves as starting material for the preparation of the phosphine resins. The bromine content is determined by elemental analysis.More

Methyl-2-mercaptobenzimidazole

CAS No: 53988-10-6

Formula: C8H8N2S

Categories: Catalyst and Auxiliary > Antioxidants

Used as an antioxidant for natural rubber, styrene butadiene rubber, butadiene rubber, nitrile rubber and its latexMore

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N,N′-(Dithiodi-2,1-phenylene)bis[benzamide]

CAS No: 135-57-9

Formula: C26H20N2O2S2

Categories: Catalyst and Auxiliary > Plastic Rubber Chemicals

Peptizer for natural rubber or styrene-butadiene rubber. It should be used at a temperature above 120℃, especially suitable for high-temperature internal mixing process, and should be added at the beginning of plasticizing. It has no effect on the aging properties of rubber products and does not spray frost. The dosage in natural rubber is 0.05-0.5%, and the dosage in styrene-butadiene rubber is 0.5-3.0%.More

Monoolein

CAS No: 25496-72-4

Formula: C21H40O4

Categories: Catalyst and Auxiliary > Perfuming

Glyceryl monooleate has a faint fatty odor It is a polar lipid that swells in water to give several phases with different rheological properties Glyceryl monooleate is a mixture of the glycerides of oleic acid and other fatty acids, consisting mainly of monooleate. Colourless Solid The PhEur 6.3 describes glyceryl monooleate as being a mixture ofmonoacylglycerols, mainly monooleoylglycerol, together withvariable quantities of di- and triacylglycerols. They are defined bythe nominal content oMore

Frequently Asked Questions

How to choose the right catalyst for your application?

When selecting a catalyst, it is important to consider the type of reaction, operating temperature, pressure, solvents involved, and desired selectivity. Other key factors include catalyst lifetime, regeneration ability, and compatibility with your process. On ECHEMI, you can browse a wide range of catalyst and auxiliary products and compare specifications from multiple global suppliers to find the best option for your needs.

What is a catalyst?

Synonyms for catalyst include accelerator, promoter, stimulant, etc. A catalyst is a substance that speeds up a chemical reaction without undergoing any permanent changes. According to the catalyst definition, it doesn't alter the thermodynamics or the catalyst meaning of the reaction, but it lowers the activation energy required for the reaction to occur. Basically, a catalyst facilitates the reaction process and increases the conversion rate without being consumed in the reaction itself. It may exist in a variety of forms, including enzymes, metals, or complex compounds.

How does a catalyst work?

The function of a catalyst is to provide an alternative pathway for a chemical reaction to take place. It reduces the activation energy required for the reaction to begin, thus speeding up the rate of the reaction. The catalyst apex is the point at which the catalyst's effect on the reaction reaches maximum efficiency. It diminishes existing chemical bonds or establishes intermediary structures, so simplifying the reaction process, consequently expediting the production of substances. This mechanism, often utilized by catalyst companies, leads to accelerated product formation.

Are enzymes catalysts?

Yes, according to the catalyst definition, enzymes are biological catalysts. Enzymes, considered protein-based catalyst synonym, facilitate biochemical reactions within living organisms. Within defined temperature and pH parameters, enzymes function as exceedingly efficient catalysts, diminishing the activation energy necessary for reactions to occur. These auxiliaries, when integrated into biological systems, demonstrate specificity and selectivity in catalyzing particular reactions, rendering them pivotal as key catalysts across diverse biological processes.

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